We have here lots of brilliant critics, (usually they are wrong,) but we have also lots of brilliant copyists. They post problems composed by other artists of the chessboard.
This, of course takes a lot of space that could be used by people with some creativity.

Are you talking about people who post historical problems (e.g. taken from books, etc.) or are you talking about people who repost problems originally created by other people on the site?

In the case of the former, I think one learns quite a bit by studying these historical problems. In the case of the latter, I would probably agree with you if it was an exact copy, but if someone is simply inspired by someone else, I see no problem with it.